Window lock



JOSEPH ANDO, OF SI-IEL'ION, CONNECTICUT.

WINDOW LOCK.

Application filed November 1, 1923, Serial No. 672,148.

This invention relates to new and useful im n'ovements in fastening devices, and particularly to fastening devices for window sashes.

One object of the invention is to provide a device of this character which includes a double locking feature, whereby should the main locking portion be released, the secondany portion will maintain the sashes against unauthorized movement.

Another object is to provide a device of this character which is simple in construction, formed from few parts, and which may be readily applied to any window sashes, in place of the ordinary look, without modification to the sashes.

A further object is to provide a device of this character wherein the secondary locking feature automatically engages when the sashes are moved into closed position, and can be again released, only, by manipulation from within.

Other objects and advantages will be apparent from the following description when taken in connection with the accompanying drawing.

In the drawing:

Figure 1 is a top plan view ofthe lock, in connection with meeting rails of the upper and lower sashes of a window.

Figure 2 is a side elevation of the lock, the sash rails being shown in section.

Figure 3 is an enlarged vertical sectional view taken centrally through the lock, on the line 33 of Figure 1.

Figure 41- is a top plan view of the lock, showing the primary locking means re leased.

Referring particularly to the accompanying drawing, 10 and 11 represent, respectively, the meeting rails of the upper and lower sashes 12 and 13, of a window, in connection with which the present invention is especially adapted for use Secured to the upper face of the rail 10 is a housing 14, having the side adjacent the other rail 11, open, and disposed within the housing, and projecting through the open side, is a triangular block 15, the same being pivoted at 16, and being normally urged outwardly by the spring 17. Pivotally mounted on the upper face of the housing 14 is a lever 18, the same having a rear wardly and downwardly curved tail 19, snugly fitting the correspondingly curved face of the housing. A rabbet 20 is formed "housing 14, to

Renewed February 25, 1926.

in the upper portion of the lever 18, and pivotally connected to the lever, within said rabbet, is one end of a locking link 21, the lower face of the outer end of which is undercut, and beveled, as shown at 22, for a purpose which will presently appear.

Secured to the upper face of the rail 11, and having its open side facing the open side of the housing 14-, is a similar housing 23. Pivotally mounted within the housing 23 is a bent lever 24L, the angle'of which normally projects through the open side of the housing for contact with the projecting portion of the block 15. It will be noted that the block 15 has a downwardly extending lug 15, which engages with the housing 14 to limit the outward movement of the block. The other end of the lever 24 projects through a slot 25 formed in the front of the housing 23, where it is provided with a button 26 for engagement by the finger of the operator, as will be explained later herein. On the upper face of the casing or housing 23, there is formed an under-beveled rib or lug 27 with which the before-mentioned undercut end of the link 21, is arranged to engage, the lever 18 being swung toward one side of the permit pivotal movement of the link. It will be noted that the lever 18 is pivotally connected with the housing 1 at its forward end, and that the link 21 is pivotally connected to the lever at its rear end, whereby when the lever is swung on its pivot, it will cause the pivot of the link to swing in an arc, the center of which is the pivot of the lever, thereby permitting the ready and easy engagement of the link with the lug 27 lVhen the lever is swung into the full line position of Figure 1, the link is caused to exert a pulling action on the housing 23, thereby drawing the sash rails 10 and 11 firmly and tightly together, and when swung toward the side of the housing, the undercut end of the link will be moved forwardly from its firm contact with the lug, and thereby permit the lever to be swung laterally, carrying the link with it.

WVhen the sashes are in closed position, and the housings 14 and 23 directly opposite, the nose of the block 15 will enter the housing 23 and rest on the lower transverse rail 28 thereof, thus effectively preventing raising of the sash to which the housing 23 is attached. Upon pressing downwardly .on the forward end of the lever 24, the angle thereof will engage the block and press the same into the housing 14:, thereby permitting the rail 28 to pass the block 15, and the sash to he raised, or the other sash to be lowered, as the case may be.

It will be noted that the tingerpieee portion of the lever 24k is disposed within the window and cannot be reached from without, by inserting any thin blade in thespace between the rails 10 and 11, as can he done in connection with the ordinary window lock, which would permit the retaining 01: locking lever to be disengaged. When, atter the sash has been raised, the same is moved into closed position, the rail 28, will engage with the inclined face of the block, push the same into the housing 14;, and the housing pass down to normal position. Immediately the block will he forced out by the spring and reengage with the upper side oi the rail 28, thus holding the sashes against movement until the lever 2st has again. been moved.

hat is claimed is A window lock including a pair of housings mounted on the meeting rails of a pair of sashes and having their mutually adjacent open sides in vertical alinement with the adjacent faces of said rails, a detent in one of the housings and spring pressed into the other housing an angle lever in the other housing in position to engage its angle with the detent to move the latter within its housin and out of the line of the rails, an undercut arcuate lug on the upper face of said other housing, a lever pivotally mounted on the upper face oi? the first housing and having its free end curved downwardly for en 'agement with the rear oi said housing, ant a hook pivotally connected to the lever and having its bill undercut for engagement with the said lug to draw the housings and sash rails into close engagement.

In testimony whereof, I aflix my signa ture.

JOSEPH ANDO. 

